Wrench-socket.



w. s. BELLOWS, WRENCH SOCKET.

APPLICATION FILED JAN. 28, I916.

Inven$4g Vi 1 12 1 6% 3.39270 ws; v

Patented Oct. 22, 1918.

WARREN S. BELLOWS, 0F WORCESTER, MASSACHUSETTS.

WRENCH-SOCKET.

Specification of Letters Patent.

katented on. 22, in.

Application filed January 28, 1916. Serial No. 74,953.

To all whom it may concern:

Be it known that I, WARREN S. BnLLows, a citizen of the United States,and a resident of Worcester, in the county of Worcester and Commonwealthof Massachusetts, have invented certain new and useful Improvements inWrench-Sockets, of which the following is a full, clear, and exactspecification.

This invention relates to an improved means for enabling metal rods tobe attached to sockets for the economical and efiicient manufacture ofwrenches, and formed a part of my patent application which eventuated inU. S. Letters Patent No. 1,167,542, granted January 11, 1916.

In the drawings forming part of this specification, Figure 1 is a sideview of a length of metal rod bent to compose a handle and a shank, andhaving my socket connected therewith. Fig. 2 is a side view of a lengthof metal rod bent for the same purpose but in a difi'erent manner,showing the socket in section. Fig. 3 is a longitudinal section of thesocket alone. Fig. 4 is an end view of the socket. Fig. 5 is an end viewof the same but from the opposite direction. Fig. 6 is a perspectiveview of the end portion of a length of metal rod shaped for attachmentin the socket.

The socket member 1 consists of a forging or casting havin a socket 2 inits lower end, and an axially disposed hole 3 opening from said socketthrough to the upper end-of said member. As illustrated in Fig. 4, thesocket is hexagonal, but it is evident that the same may be of andesired shape and size to fit the kind of olts and nuts for which thewrench may be used. As shown in Figs. 4 and 5, said hole 3 is notcylindrical, but the upper section thereof is made with two parallelfiat surfaces 4, 5, and two limited cylindrical surfaces 6,'the objectof which is hereinafter set forth. The lower section of said hole islarger than said upper section, taper- ,into each other, as shown inFigs. 3 and 4.

1 handle and shank of this wrench consist of a single length of metalrod bent to form a shank 7 and cross handle 9. In

forming said parts, the rod is first bent united by the connectingsection 13. This construction is illustrated in Fig. 1, and while itforms a most practical arrangement, it is still further improved upon byprolonging the handle and bending over upon it the prolongation 14, asshown in Fig. 2. This prolongation terminates at the intersection of thehandle and shank.

To fasten the shank within the socket member 1, the former has twoopposite portions of its surface milled away to fit between the surfaces4 and 5, while the diameter or the shank is the same as that of thecurved surfaces 6. Fig. 6 shows the milled portions. After such milledsection has been introduced into the hole 3, the end of said section ishammered until the metal has been forced laterally to practically thetapered section 8, as illustrated in Fig. 2, the shoulders 12immediately above said milled portions serving to keep the socket memberfrom slipping upward on the shank.

This not only looks the shank from withdrawal from the socket, but, saidsection 8 being, also flattened, as shown in Fig. 4, the forcibleturning of the socket with the handle is perfectly insured.

It will be observed that upon expanding the end of the shank, the metalis forced against the inclined walls of the opening in the socket, andat the same time the socket is forced into tight engagement with theshoulders on the shank, thus positively pre venting any possiblelooseness or we bling of the socket on the shank. The constructionillustrated enables the use of a round wire handle or shank, and theefi'ective securing thereon of the socket with a miniwith the ordinaryheading or upsetting of the end of the shank. With this construction, itis apparent that the connection between the shank and socket must becomeloose on the whole length of the inclined walls before an relativemovement of the socket and she can take place.

at I claim is:

1. A wrench comprising a socket formed on one side thereof with a recessto fit a nut or bolt head and in the opposite end thereof with anirregular shaped opening extending into said recess, the walls of saidopening opening extending into the diverging toward the base oi. therecess and a shank provided with a reduced end having a cross sectioncorresponding substantially with the irregular shaped opening andadapted to fit therein, the extremity of said reduced portion of theshank being expanded into snug engagement with the walls of theirregular shaped opening in the socket.

2. A wrench comprising a socket formed in one end thereof with apolygonal recess adapted to receive a nut or bolt, and in the oppositeend thereof with flat sided opening extending into said recess, thewalls of said opening diverging inwardly to the base of the polygonalrecess, and a shank having one end thereof also fiat sided to fit thereinto and interlock therewith, the said shank being provided withshoulders above the flat sided opening, and the extremity of said fiatsided end of the shank being upset to.

force the same into a snug engagement with the diverging walls at theflat sided open= mg and to force the socket tightly against theshoulders on the shank.

3. A wrench comprising a socket member provided in one end thereoi witha polygonal recess adapted to receive a nut or holt head, and in theopposite end thereof with olygona to the radius of the curved walls ofthe opening in the socket, one end of said rod being provided with apair of opposed fiat faces corresponding with the flat walls of theopening in the socket, said fiat faces terminating at their inner endsin square shoulders, said flat faces and shoulders being formed bymilling away portions of the rod, the said end of the shank beingadapted to snugly fit within the opening in the socket and the extremitythereof being upset to force the same into tight engagement with thefiat walls of the opening and to force the socket tightly against thesaid shoulders on the shank.

In testimony that I claim the foregoing invention, 1 have hereunto setmy hand this 25th day of January, 1916.

WARREN S. BELLQ'WS F/itnesses:

Nrcmnson, Goo, in. Enact-ram,

